What powers calvijncollege.amsterdam?
Last seen Jun 2026 · 33 technologies across 19 categories
Analytics
Google Analytics
since Mar 2020
CDN
jQuery CDN
since Mar 2022
CMS
Databases
MySQL
since Mar 2020
Font scripts
Hosting
WordPress Multisite
since Jul 2023
JavaScript frameworks
GSAP
since Feb 2024
JavaScript libraries
Lightbox
since Mar 2020
OWL Carousel
since Mar 2020
Miscellaneous
Open Graph
since Sep 2022
RSS
since Feb 2024
Performance
Priority Hints
since Oct 2023
Programming languages
Security
Really Simple SSL & Security
since Apr 2024
reCAPTCHA
since Aug 2022
UI frameworks
Animate.css
since Feb 2024
Bootstrap
since Mar 2020
Video players
Web servers
Webmail
Microsoft 365
since Aug 2022
Widgets
WordPress plugins
WordPress themes
Audience
Netherlands
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.19 / 10 · ranked #10,018,782 of all domains
5 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.9 s |
| INP | 50 ms |
| CLS | 0.05 |
| TTFB | 2400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: Dutch (Netherlands)
- Weight: 22.9 MB · 75 requests
- WordPress theme: astra · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| calvijncollege.amsterdam | 23 |
| www.calvijncollege.amsterdam | 23 |
Full technology history →
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Recent changes
- detected Twitter Emoji (Twemoji) Dec 2025